Stoker mechanism



C. J. SURDY ET AL STOKER MEGHANISM Nov. 24, 1936.

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STOKER MECHANISM Filed Dec. l2, 1934 2 SheebS-Sheefl 2 @i7 www ATTORN EYPatented Nov. 24, 1936 UNITED STATES STOKER MECHANISM Charles J. Surdy,Tuckahoe, and Edwin Archer Turner, New York, N. Y., assignors to TheStandard Stoker Company,

Incorporated, a

corporation of Delaware Applicationv December 12, 1934, Serial No.'757,128 a claims. (c1. 19e- 15) Our invention relates to stokermechanism of the type which is especially adaptable for service intransferring fuel from a tender to a locomotive rebox.

It is the principal object of our invention to provide in a stokermechanism of the above type, a conveying system which` includes aconveyor mounted on the locomotive, a conveyor mounted on the tender,and an intermediate conveyor between the rst and second named conveyors,the intermediate conveyor being of unvarying length and at one end beingflexibly related with one of said conveyors with which it has anunvarying longitudinal relation and having its opposite end offset andseparated from the adjacent end of the other of said conveyors, suchlast named end of said intermediate conveyor being arranged for movementabout horizontal and vertical axes and also for movement fore and aftwith respect to the offset end of said adjacent conveyor.

A more specific object of our invention resides in the provision of theabove described stoker mechanism and wherein the offset relation existsbetween the adjacent ends of the conveyor which is mounted on the tenderand the intermediate conduit.

Further objects of. our invention include the general improvement uponstokers of the type described by reducing the number of parts,simplifying their construction and relation one'with another, and alsothe provision of a stoker mechanism wherein the transfer of fuel fromthe tender to the locomotive rebox is accomplished with a minimumdegradation Vof the fuel. j

In the drawings which form a part of the specication,

Figure 1 is a vertical medial section thro-ugh adjacent portions of a Ylocomotive and tender showing the Stoker mechanism of our invention inelevation with portions thereof broken away;

Figure 2 is a plan view taken on the line 2 2 of Figur-e 1, certainportions being removed or broken away;

Figures 3 and 4 are cross sectional views taken on the lines 3 3 and 4 4of Figure 1;

Figure 5 is a sectional View taken on the irregular line 5 5 of Figure3;

Figure 6 is a sectional view taken on the line 6 6 .of Figure l; and

Figure 7 is a sectional view taken on the line 1 1 of Figure 5.

On these drawings A is the locomotive, B the tender thereof and C acoupling member between the locomotive and tender. The locomotive Aincludes a boiler I having a rebox II into which fuel is suppliedthrough an opening I2 in the backwall I3. At I4 is indicated thetank .ofthe tender and it is provided with a compartment I beneath the deck I6,the latter forming the bottom of the fuel bin I1,

The Stoker mechanism for transferring fuel from the bin Il to the reboxIi is indicated generally by S and it includes a conveyor I8 rigidlymounted on the tender within the compartment i5, an inclined conveyor i9rigidly mounted on the locomotive and an intermediate conveyor betweenthe conveyors i8 and I9. Comprising the conveyor i8 is a trough-likeconduit 2| having an upwardly opened mouth 22 which registers with anaperture E3 in the tender deck I6. This aperture is covered by plates 24which are slidable to form an opening 25 in various longitudinalpositions with respect to the fuel bin Il and through which opening thefuel falls into the conduit 2l upon a Conveyor screw 26 therein. Theconveyor screw 26 urges the fuel forwardly and in cooperation with atoothed Crusher 2l reduces large lumps of fuel to a suitable size foreflicient firing. Smaller lumps need not be subjected to furtherdegradation and they fallinto the intermediate conveyor I9 through slots28 which are formed in the conduit 2| and arranged so that the `smallerfuel particles will fall therethrough prior to the action thereon of.the crusher'ZI. v

The intermediate conveyor 20 includes a conduit element 29 having arearward end 30 which is disposed beneath the forward end of thetroughlike conduit 2! to receive fuel therefrom, and a tubular portion3|. At its forward end, the tubular portion 3l is provided with aspherical flange 32 which is received in a spherical seat 33 of anelevating conduit 34 of the inclined conveyor I9. A clamp 35 retains thespherical flange 32 in the seat 33 and these parts form a ball andsocket joint 36 between the intermediate conduit element 29 and theelevator conduit 34. Within the tubular portion of the conduit element29 is aA conveyor screw 3m extending the full length of the conduit andbeing connected to an elevating screw 34a by a joint kstructure 36a. Atits rear-- most end, the conduit element 29, which is nonextensible andnon-contractible in length, is provided with a pad or foot 3l having anarcuately shaped under side resting upon a seat 38 which may be formedin the frame 39 of the tender. The seat 38 is provided with an upwardlyopening groove 40 extending longitudinally of the tender and in thisgroove is fitted a circular boss @I which is formed with the under sideof the pad 3l.

Thus, when the locomotive and tender are rounding curves or passingswitches and turntables, the intermediate conveyor 20 has, at all times,an unvarying longitudinal relation with the locomotive but a varying onewith the tender. The rearward end of the intermediate conveyor pivotsabout an upstanding axis by reason of the boss 4I engaging the groove40; rocking movement of the rearward end about a horizontal axis isprovided by means of the arcuate under side of the pad or foot 31.

At times, foreign material in the fuel will become wedged between theflights of the conveyor `screw 26 and the teeth of the Crusher 21whereby the entire Stoker mechanism is rendered inoperative. In orderthat the delivery of fuel into the rebox may be continued during theseemergencies, we have arranged the conveyor screws of the stokermechanism forward of the crusher in a manner whereby they may beoperated independently of the conveyor screw 26 and also so that fuelfrom the bin I1 may be fed manually to the stolzer mechanism forward ofthe crusher.

To accomplish these ends, a drive mechanism is provided which includes aprime mover 42 for transmitting power through a shaft 43 to a gear train44 in a housing 6U at the rear of the conveyor screw 25. The gear train44 includes a pinion 45 which is driven by the shaft 43 and meshes witha gear 45. Gear 46 is freely mounted on a shaft 41 which is operativelyconnected to the conveyor screw 26 and also meshes with another gear 48having a driving connection with the rearward end of the screw Sla bymeans of the telescopic shafting 49. The gear 46 is p-rovided at oneside with clutch teeth 56 which are arranged to be engaged by teeth 5Iof the clutch member 52, the latter being arranged for rotation with theshaft 41 and shdable therealong by the yoke 53.

During the normal operation of the stoker mechanism, the clutch member52 is in a position whereby its teeth 5| engage the clutch teeth 50 ofthe gear 45 so that power may be transmitted to the shaft 41 foroperating the conveyor screw 26. When the stoker mechanism becomesstalled because of foreign material lodging between the flights of thescrew 26 and the crusher v 21, the clutch member 52 is moved to aposition as shown in Figures 1 and 2 whereby the conveyor screw 25 isdisconnected from its operative relation with the gear train 44. Thegear train will then be free to operate the conveyor l screw 3 Ia andits universally connected screw 34a for delivering fuel to thedistributing means 55.

Manual delivery of fuel into the operating portion of the stokermechanism is effected by raising the hinged cover 56 in the tender deckI 6, moving the slidable plate 24 out of the way and then shovellingfuel into the upwardly opening mouth 38a of the conduit element 29 whichmouth is directly beneath the hinged cover 56 and eX- tends to therearward end of the conduit element 29.

It will be observed that the tubular portion 3| of the intermediateconduit element and the conveyor screw 3 Iar therein extends forwardlyand upwardly toward the elevator conduit 34 from a point below and atone side of the axis of the conveyor screw 26. By this relation ofparts, the conveyor screw 25 delivers fuel more directly to the conveyorsere-w Sla and at the same time the adjacent olfset ends of theconveyors I8 and 20 are positioned within the available space in thecompartment I5 between the under side of the tender deck I6 and theframe 3S.

It will also be observed that the relation of the intermediate conveyor20 with the conveyors I8 and I9 is a novel one employing fewer partsthan heretofore possible and at the same time ample provision has beenmade to compensate for relative movement between the conveyors when thelocomotive and tender are rounding curves or crossing switches andturntables.

We claim the following as new and useful.

1. In combination with an articulated locomotive and tender, the formerhaving a rebox and the latter having a fuel bin, stoker mechanism fortransferring fuel from the bin to the locomotive iirebox including aconveyor rigidly mounted on the locomotive and communicating with saidrebox, a conveyor rigidly mounted on the tender to receive fuel from thebin and arranged to urge the fuel forwardly toward the locomotive rebox,an intermediate conveyor between the first and second named conveyors,said intermediate conveyor at one end being flexibly connected inend-to-end relation with the adjacent end of said first named conveyorand having an unvarying longitudinal relation with such conveyor, saidintermediate conveyor at its opposite end being offset and separatedfrom the adjacent end of the second named conveyor and having a varyinglongitudinal relation with such conveyor, the aforesaid opposite end ofsaid intermediate conveyor being also arranged for movement abouthorizontal and vertical axes.

2. In combination with an articulated locomotive and tender, the formerhaving a rebox and the latter having a fuel bin, stoker mechanism fortransferring fuel from the bin to the locomotive firebox including aconveyor rigidly mounted on the locomotive and communicating with saidrebox, a conveyor rigidly mounted on the tender to receive fuel from thebin and arranged to urge the fuel forwardly toward the locomotivefirebox, an intermediate conveyor between the first and second namedconveyors, said intermediate conveyor at one end being flexiblyconnected in end-to-end relation with the adjacent end of said firstnamed conveyor and having an unvarying longitudinal relation with suchconveyor, said intermediate conveyor at its opposite end being supportedsolely by said tender and being offset and separated from such .end ofsecond named conveyor, the aforesaid opposite end of said intermediateconveyor being arranged for movement longitudinally of the tender andalso for movement about horizontal and vertical axes.

3. In combination with an articulated loc0motive and tender, the formerhaving a rebox and the latter having a fuel bin, stoker mechanism fortransferring fuel from the bin to the locomotive firebox comprising aconduit mounted on the locomotive in communication with said rebox, aconduit mounted on the tender to receive fuel from said bin, anintermediate conduit of unvarying length between the rst and secondnamed conduits, said intermediate conduit at its forward end beingexibly connected in end to end relation with the first named conduit andhaving an unvarying longitudinal relation therewith, the rearward end ofsaid intermediate conduit being mounted on the tender for movement abouthorizontal and vertical axes independent of and offset and separatedfrom the adjacent end of the second named conduit and having a varyinglongitudinal relation therewith, and means in said conduit for advancingfuel therethrough.

CHARLES J. SURDY. E. ARCHER TURNER.

